Maxima Function
bessel_k (v, z)
The modified Bessel function of the second kind of order v and argument z.
bessel_k computes the array besselarray such that
besselarray [i] = bessel_k [i + v - int(v)] (z) for i from zero to int(v).
bessel_k is defined as
%pi csc(%pi v) (bessel_i(-v, z) - bessel_i(v, z)) ------------------------------------------------- 2
v is not an integer. If v is an integer n, then the limit as v approaches n is taken.